Telephone



Feb. 28, 1933.

K. NICHOLS ET AL TELEPHONE Filed Oct. 15, 1931 Patented Feb. 28, 1933 STES arr

Lasagnal KATHERINE NICHOLS ANDMRICEABD BETTIEN, F CHICAGO, ILLINOIS; SAID BET'IIEN 1'" 'i ASSIGNOR TO SAID NICHLS TELEPHONE Application filed October 1 5, 1931. Serial No. 569,014.

This invention relates to telephones in general and particularly to telephones of the desk type. n

The primary object of the present invenv` tion is to provide a telephone instrument of the desk type which has a. pair of properly spaced receivers flexibly connected to a coupling member which is removably carried by a supporting base.

lo Another object of the invention is to provide a new and improved telephone instrument which is provided with connected spaced receivers to which a transmitter is attached whereby the receivers and the cooperating transmitter may be detached from porting base receiving a T-shaped coupling,

the T-shaped coupling being removed from the base and carrying the spaced receivers anda transmitter disposed intermediate the receivers.

A still further object is to provide a new and improved method of establishing various electrical connections between the instrument and the line wires.

Numerous other objects and advantages will be apparent throughout the progress of the following specification.

The accompanying drawing illustrates a selected embodiment of the invention andthe views therein are as follows:

4G Fig. l is a detail elevation of the improved telephone.

Fig. 2 is an enlarged sectional view on the line 2-2 of Fig. l.

Fig. 3 is a detail sectional view on the line 4'5- es of rig. c.

rThe particular instrument herein disclosed comprises a single T-shaped fitting or coupling 5 having a pedestal or stem 6 and opp positely disposed integral tubular arms 7 and 8. Each of said arms project upwardly and havecurved tubular portions 9 to which exible conduits l0 are connected. Receivers 1l are connected to the upper ends of the conduits 10 as clearly shown in Fig. l. The span of the two receivers 1l is slightly less than a normal head width and are held in normal upright position by means of 'leaf springs 12. These leaf springs are relatively resilient and tend to hold the receivers comfortably to the ears of the user when the instrument is in use.

The T-shaped coupling 5 is provided with a recess or notched portion 13 to which the end 14 of a transmitter 15 is connected, the connection being relatively loose so that the normal position of the transmitter will be as shown in full lines in Figs. 1 and 2, the transmitter being moved to the position shown in dotted lines when the instrument is in use.

The circuit wires from the receivers eX- tend downwardly through the conduits l0 and through the arms 9 where they are incorporated with the transmitter circuit wires to form a cord 16 which extends through an aperture in the body of the coupling.

The coupling 5 and the associated parts above described, are adapted to be removed from the instrument base 17 when the instrument is in use. The base 17 comprises a supporting plate 18 to which a casing 19 is operatively connected. An upstanding casing or support 2O has screw threaded engagement with the casing 19 as indicated at 2l and is provided with oppositely alined slots 22 through which a cross member 23 extends. The cross member 23 is rigidly connected to a stud 24 which is slidably mount-v ed in the upstanding casing or support 20, the slidable movement of the stud relative to the member 20 being restricted by the size ot' the slots 22. A pair of nuts 25 and 26 are fastened near the lower end of the supporting casing 20. These nuts are screw threaded to the supporting casing 20, as indicated, and secure the metal straps 27 and 28 therebetween. lUrging members, such as springs 29, are arranged between the cross piece 23 and a surface of the nut 25 to normally urge the stud 24- upwardly.

mal position as shown in strap 27. The block carries a series of binding screws 34 through which the various electrcal'connections between the instrument and the lineiwires are made. The contact plate 31 is made of resilient material and makes contact with the contact plate 32 except when it is urged out of contact by the stud 24. The plate 28 serves as a support for the resistance coil 35, as clearly shown in Figs. 2 and 3. The contact plates 31 and 32 are included in the ringing or signal circuit when the instrument is in normal position, as shown.

The conical fiber tip of the stud 24 contacts with'the lower plate 31 and breaks a signal circuit when the phone is in use and the weight ofthe coupling 5 moves it out of contact with its companion plate 32, thereby completing the signal circuit when the phone is in the position shown in Fig. 2. A metal U-shaped strap 36 is secured at its ends to the lates 27 and 28 and forms a support for the ase 18.

The pedestal or stem 6 is provided with an inner chamber 37 into which the stud supportin casing 20 and the stud 24 are received when t e coupling 5 is positioned on the base, as shown in Fig. 2.

When the instrument is used, the pedestal or stem 6 is grasped by the handtoremovethe entire coupling 5 from the supporting base. When the coupling is removed, the springs 29 urge the stud 24 upwardly a. distance equal to the length of the slots 22, thereby moving the conical tip 30 away from the contact plate 31 permitting the contact plate 31 to make contact with its cooperating contact plate 32. After the conversation is completed, the coupling 5 is again placed in position over the stud and its cooperating stud casing and due to the weight of the coupling, the stud will be pushed downwardly against the urging action of the springs 29 pushing the contact late 31 out of engagement with its cooperating plate 32 and returning the parts to normal position, as shown in Fig. 2. The pedestal or stem 6 is relatively short so that when it is ped for removing the coupling from the base, the transmitter 15 may be pulled or pushed upwardly to the position shown in dotted lines in Figs. 1 and 2. This position is intermediate the receivers 11 so that when the receivers ll'are in position on the head of a person, the transmitter will be in proper kin position. Means (not shown) may be provided for limiting the pivotal movement of the transmitter so ythat the transmitter will only move in an arc of 90.

The instrument may have a dial 38 operatively connected thereto in the usual manner for a purpose well known in the art.

The invention is an improvement over the device shown in Patent No. 1,216,480, granted to Katherine Nichols February 20, 1917.

The invention rovides double receivers resiliently moun on an integral T-shaped coupling and between which a transmitter is operatively mounted. The receivers are` properly held in position on the head of a user and are resiliently urged against the users ears. The engagement of the cou ling with the base causes positive and e cient completion or breaking up of the circuit.

Changes may be made in the form, construction, and arrangement of the parts without departing from the spirit of the invention or sacrificing any of its advantages, and the right is hereby reserved to make all such changes as fairly fall within the scope of the following claims.

The invention is hereby claimed as follows:

1. In a device of the class described, a unit comprising a pair of receivers, a transmitter operatively connected to said receivers, a base removably supporting said unit, said unit being removable from the base, a stud carried by said base and operated by the removal or replacement of the unit for controlling the signal circuit of the telephone system, said plug having limited slidable movement relativel to the base.

2. In a device of the class described a unit comprising a receiver, a transmitter operatively connected with said receiver, a, base removably supporting said unit, said unit being removable from the base and having an opening therein, a lstud carried by the base and adapted to cooperate with said opening in maintaining said unit in position upon the base, said stud being capable of a limited shifting movement and operative upon the removal or replacement of the unit for controlling the signal circuit of the telephone system. i KATHERINE NICHOLS.

RICHARD BETTIEN. 

